Clutch-pulley.



W. DUERR, DBCD. n. r. FELMLY, ADMINISTRATOR.

GLUTGH PULLEY. APPLICATION FILED MAY 6, 1907. RENEWED HA3. 5, 1908.

Patented Oct. 20,1908. 1/ 74 2 BHEETfi-SHEET 1.

113 FELNTLYADMIN XHI NORRIS PETERS '70., WASHINGTON, o. c

W. DUERR, DEGD. n. r. FELMLY, ADMINISTRATOR.

'ULUTGH PULLEY. APPLICATION FILED MAY 6, 1907. RENEWED MAB.

5, 1908. Patented 0013. 20, 1908.

2 SHEETS-SHEET 2.

m r H awe/WW2: WM D UEBHJJEIZEASED 11 E FELL/ELY ADMIN Guam WM TI I v TH! humus PIYEIS'CO., WASHINGTGN, n. cy

DAVID F. FELMLY, OF AKRON, OHIO, ADMINISTRATOR ASSIGNOR OF ONE-HALF TO OHRISTANA M. DUERR AND OF OUYAHOGA FALLS, OHIO.

or WILLIAM DUEER, :oEcEAsED, ONE-HALF TO THOMAS PHILLIPS,

CLUTCH-PULLE Y.

Application filed May 6, 1907, Serial N 0. 372,286. Renewed March 5, 1908.

To all whom it may concern:

Be it known that WILLIAM DUERR, late a citizen of the United States, deceased, and resident of Cuyahoga Falls, in the county of Summit and State of Ohio, in his lifetime invented certain new and useful Improvements in Clutch-Pulleys, of which the following is a specification.

This invention relates to clutches, and has for its object to provide a device of this kind, which will be simple, strong, and eflicient.

In the accompanying drawings, which illustrate the invention,Figure 1 is a broken end elevation of the clutch; Fig. 2 is a side elevation, partly in section; Fig. 3 is a broken detail view; Fig. 4 is a perspective view of one of the clutch members.

Referring more particularly to the drawings, 1 indicates one of the clutch members which is provided with a rim or flange 2, and is adapted to be rigidly secured to the shaft 3 in any desired manner, as by a set screw 4. The loose member of the clutch comprises a hub or hollow member 5, which is recessed at one end, as shown at 6, and provided with a flange 7, which is adapted to stand adjacent to the edge of the flange 2.

The face of the flange 7 is provided with radially arranged grooves 8, within which are reciprocally mounted the arms 9 of the clutch members 10 and 11. Said clutch members are preferably arranged upon opposite sides of the flange 2 and each com rises a segmental portion which is preferab y provided with a shoe or wearing late 12, the plates upon the inner shoes lieing placed upon the outer face thereof, and those upon the outer shoes being laced upon the inner face. Strengthening rlbs 13 extend from the arm toward the free edges of the clamps or segmental portions 10 and 12, and the ends of said clamps may be provided with ribs 14 to assist in holding the wearing plates.

An annular plate 15 is secured to the face of the flange 7 so as to hold the arms 9 in their respective recesses 8 and the inner end of each arm 9 is provided with a head 16, which is ada ted to fit in one of the recesses 17 forme$ in the periphery of a sleeve 18, said sleeve being reciprocally mounted in the hollow or hub 5. The recesses 17 have their Walls dove-tailed or inclined forward so as to engage with the inclined walls of the heads 16, and the bottom of each recess is inclined from one end to the other relatively to the Specification of Letters Patent.

Patented Oct. 20, 1908.

Serial No. 419,395.

axis of the clutch or shaft upon which it is mounted. The inclination of said bottoms are arranged in rzpposite directions and the overhanging or ovetailed walls are similarly inclined or formed to correspond therewith so that when the sleeve is moved in one direction, part of the clutch members will be moved outward and the other ones drawn inward, thereby causing said members to engage with the opposite sides of the rim 2, as heretofore described. By providing the clutch with six movable members, alternating them as shown in the drawings, each cutwardly moving member will engage with said rim between two inwardly moving members, and each inwardly moving member will engage with the outside of said rim between two outwardly moving members, thereby causing a uniform pressure upon the rim, and by making said members of a suflicient length they will engage with the rim, substantially entirely therearound, except at short distances between the ends of adjacent members, and by making said members of sufficient width, a very great bearing surface is secured for locking the two members of the clutch to ether.

The hub or collar 5 is provided with longitudinally arranged perforations 19, through which screw-threaded pins 20 project, and when the clutch is to be used upon two alined shafts as in the present instance, the collar is rigidly secured to the shaft 21 by means of a set screw 22. The inner ends of the pins or stems 20 are screwed into the inner end of the sleeve 18 and are adjustably connected at their outer ends with a shifting collar 22, as by being passed through perforations ina flange 23 and secured by means of nuts 24 upon opposite sides of said flange. The opposite end of the collar is provided with an annularly recessed head or enlargement 25, within which is seated a band 26, having trunnions 27 arranged at diametrically opposite points for engagement with the shifting lever 28. The band 26 is preferably formed from two semicircular pieces, each of which is provided with one of the trunnions 27 and has laterally extended projections 29, which are adapted tobe secured together by a bolt or screw 30. The inner faces of said projections are cut away, as shown at 31, which will permit of the projections being moved toward each other to compensate for wear by simply grinding off a LOO said projections.

As above described, it will'be seenthat the clutch is composed of but few parts and these arranged in such a manner as to be positively operated, and a very lar surface is secured for binding t e clutch members together. The clutch is-so com pact that it can be used to good advantage on such mechanisms as automobiles, etc., or it can be made of such size as to adapt it for use upon any other form of mechanism. When it'is desired to use the clutch upon a singleshaft, either one of the members can be rigidly secured thereto, and the other one provided with a transmitting member that will be adapted to take the place of the ordinary-loose pulley.

Having described the invention, what is claimed'is 1. In a'clutch, two members, one of which is provided with a'flange, and the other one is provided with a plurality of radially. arranged reciprocatory' arms, the outer end of each arm beingprovided with a segmental clamp,

and the inner end provided with a head, and a reciprocatory'sleeve having inclined dovetailed recesses in its periphery for the reception ofsaid heads, said recesses being inclined in opposite directions for causingsaid clamps to engage with said flange upon opposite sides thereof.

2. In a clutch, a member provided'with a flange, a radially recessed member adjacent to the edge of said flange, reciproca tory arms in said recesses, the outer'ends of which are provided with clamps, an annular plate secured over said recesses, and a longitudi nally recessed sleeve for engaging with said arms and causing the alternate armsto be moved in opposite directions, whereby their e bearing" clamps" are caused to simultaneously engage with said flange upon opposite sides thereof.

3; In aclutch, a member provided-with a flange, a-collar'provided with a radially recessed flange adjacent to'the-rim of the firstmentioned flange, said collar being provided with a recess at one end and with longitudinal perforationscommunicating therewith, arms reciprocally mounted in said radial recesses, and each provided at its outer end with a clamp for engaging. with said first-mentioned flange, a sleeve reciprocally mounted insaid recess having nclmedrecesses 1n 1ts per phery. for engaging with the inner ends of said arms screw threaded pins pro ectingthrough said perforations into said sleeve, and a shifting collarv adjustably connected with the outer ends of saidpins.

4. In a clutch, two members, one of which is provided with means for detachably engaging. with the other, a shifting. collar for actuatingsaidmeans, theouter end of said collar being'pr'ovided with an annularly recessed head, a band on said head comprising. two semi-circular members, each of which is provided with a trunnion and has each end provided with aperforated projection, the inner face of said projection being cut awayv except at its ti and means through said perforation for hol ing the corresponding tips of the two members in contact.

In testimony whereof I have hereunto set my hand in the presence of two subscribing;

witnesses.

DAVID F. FELMLY, Administrator of the estate of William Duerr,

deceased. I Witnesses:

IVA M. SMITH, H. FLCASTLEJ 

